
What is a prompt box?

The prompt() is a method of the window object, just like alert() we just saw. The format for prompt() is similar to alert(), except for one addition. Prompt uses a text field to enter a value. It also has 'OK' and 'CANCEL' buttons, while the alert has only one button.
<html>
<body>
<script language="javascript">
var name;
name = prompt("Pleas enter you Name"," enter you name");
if(name != " enter you name"){
alert("Well Come " + name +
" at roseindia");
}else{
alert("Well Come at roseindia");
}
</script>
</body>
</html>